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Finding the Fourth Proportional to 65,529.52, 90,430.64 and 37,235.20

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Solution

The fourth proportional to 65,529.52, 90,430.64 and 37,235.20 is: 51,384.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,529.52 : 90,430.64 = 37,235.20 : x
  2. Step 2: Convert to fraction form
    65,529.52/90,430.64 = 37,235.20/x
  3. Step 3: Cross multiply
    65,529.52x = 90,430.64 × 37,235.20
  4. Step 4: Simplify right side
    65,529.52x = 3,367,202,966.53
  5. Step 5: Solve for x
    x = 3,367,202,966.53/65,529.52
  6. Step 6: Final answer
    x = 51,384.52

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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.