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Finding the Fourth Proportional to 58,030.85, 79,561.03 and 56,981.09

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Solution

The fourth proportional to 58,030.85, 79,561.03 and 56,981.09 is: 78,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,030.85 : 79,561.03 = 56,981.09 : x
  2. Step 2: Convert to fraction form
    58,030.85/79,561.03 = 56,981.09/x
  3. Step 3: Cross multiply
    58,030.85x = 79,561.03 × 56,981.09
  4. Step 4: Simplify right side
    58,030.85x = 4,533,474,210.92
  5. Step 5: Solve for x
    x = 4,533,474,210.92/58,030.85
  6. Step 6: Final answer
    x = 78,121.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.