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Finding the Fourth Proportional to 90,088.84, 124,338.06 and 52,385

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Solution

The fourth proportional to 90,088.84, 124,338.06 and 52,385 is: 72,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,088.84 : 124,338.06 = 52,385 : x
  2. Step 2: Convert to fraction form
    90,088.84/124,338.06 = 52,385/x
  3. Step 3: Cross multiply
    90,088.84x = 124,338.06 × 52,385
  4. Step 4: Simplify right side
    90,088.84x = 6,513,449,273.10
  5. Step 5: Solve for x
    x = 6,513,449,273.10/90,088.84
  6. Step 6: Final answer
    x = 72,300.29

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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.