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Finding the Fourth Proportional to 60,443.20, 90,697.20 and 25,386.40

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Solution

The fourth proportional to 60,443.20, 90,697.20 and 25,386.40 is: 38,093.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,443.20 : 90,697.20 = 25,386.40 : x
  2. Step 2: Convert to fraction form
    60,443.20/90,697.20 = 25,386.40/x
  3. Step 3: Cross multiply
    60,443.20x = 90,697.20 × 25,386.40
  4. Step 4: Simplify right side
    60,443.20x = 2,302,475,398.08
  5. Step 5: Solve for x
    x = 2,302,475,398.08/60,443.20
  6. Step 6: Final answer
    x = 38,093.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.