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Finding the Fourth Proportional to 77,382.68, 106,792.55 and 43,402.07

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Solution

The fourth proportional to 77,382.68, 106,792.55 and 43,402.07 is: 59,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,382.68 : 106,792.55 = 43,402.07 : x
  2. Step 2: Convert to fraction form
    77,382.68/106,792.55 = 43,402.07/x
  3. Step 3: Cross multiply
    77,382.68x = 106,792.55 × 43,402.07
  4. Step 4: Simplify right side
    77,382.68x = 4,635,017,730.58
  5. Step 5: Solve for x
    x = 4,635,017,730.58/77,382.68
  6. Step 6: Final answer
    x = 59,897.35

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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.