Home / 90,430.13-124,787.49-50,142.40

Finding the Fourth Proportional to 90,430.13, 124,787.49 and 50,142.40

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Solution

The fourth proportional to 90,430.13, 124,787.49 and 50,142.40 is: 69,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,430.13 : 124,787.49 = 50,142.40 : x
  2. Step 2: Convert to fraction form
    90,430.13/124,787.49 = 50,142.40/x
  3. Step 3: Cross multiply
    90,430.13x = 124,787.49 × 50,142.40
  4. Step 4: Simplify right side
    90,430.13x = 6,257,144,270.63
  5. Step 5: Solve for x
    x = 6,257,144,270.63/90,430.13
  6. Step 6: Final answer
    x = 69,193.14

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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.