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Finding the Fourth Proportional to 60,467,561.80, 90,701,342.70 and 20,078,045.80

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Solution

The fourth proportional to 60,467,561.80, 90,701,342.70 and 20,078,045.80 is: 30,117,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,467,561.80 : 90,701,342.70 = 20,078,045.80 : x
  2. Step 2: Convert to fraction form
    60,467,561.80/90,701,342.70 = 20,078,045.80/x
  3. Step 3: Cross multiply
    60,467,561.80x = 90,701,342.70 × 20,078,045.80
  4. Step 4: Simplify right side
    60,467,561.80x = 1,821,105,712,852,095.75
  5. Step 5: Solve for x
    x = 1,821,105,712,852,095.75/60,467,561.80
  6. Step 6: Final answer
    x = 30,117,068.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.