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Finding the Fourth Proportional to 66,041.50, 91,068.75 and 56,512.92

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Solution

The fourth proportional to 66,041.50, 91,068.75 and 56,512.92 is: 77,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,041.50 : 91,068.75 = 56,512.92 : x
  2. Step 2: Convert to fraction form
    66,041.50/91,068.75 = 56,512.92/x
  3. Step 3: Cross multiply
    66,041.50x = 91,068.75 × 56,512.92
  4. Step 4: Simplify right side
    66,041.50x = 5,146,560,983.25
  5. Step 5: Solve for x
    x = 5,146,560,983.25/66,041.50
  6. Step 6: Final answer
    x = 77,929.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.