Home / 65,343.12-90,159.60-38,475.84

Finding the Fourth Proportional to 65,343.12, 90,159.60 and 38,475.84

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Solution

The fourth proportional to 65,343.12, 90,159.60 and 38,475.84 is: 53,088.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,343.12 : 90,159.60 = 38,475.84 : x
  2. Step 2: Convert to fraction form
    65,343.12/90,159.60 = 38,475.84/x
  3. Step 3: Cross multiply
    65,343.12x = 90,159.60 × 38,475.84
  4. Step 4: Simplify right side
    65,343.12x = 3,468,966,344.06
  5. Step 5: Solve for x
    x = 3,468,966,344.06/65,343.12
  6. Step 6: Final answer
    x = 53,088.47

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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.