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Finding the Fourth Proportional to 90,088.40, 124,355.40 and 54,280.40

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Solution

The fourth proportional to 90,088.40, 124,355.40 and 54,280.40 is: 74,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,088.40 : 124,355.40 = 54,280.40 : x
  2. Step 2: Convert to fraction form
    90,088.40/124,355.40 = 54,280.40/x
  3. Step 3: Cross multiply
    90,088.40x = 124,355.40 × 54,280.40
  4. Step 4: Simplify right side
    90,088.40x = 6,750,060,854.16
  5. Step 5: Solve for x
    x = 6,750,060,854.16/90,088.40
  6. Step 6: Final answer
    x = 74,927.08

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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.