Home / 65,386.86-90,253.17-38,538.06

Finding the Fourth Proportional to 65,386.86, 90,253.17 and 38,538.06

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Solution

The fourth proportional to 65,386.86, 90,253.17 and 38,538.06 is: 53,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,386.86 : 90,253.17 = 38,538.06 : x
  2. Step 2: Convert to fraction form
    65,386.86/90,253.17 = 38,538.06/x
  3. Step 3: Cross multiply
    65,386.86x = 90,253.17 × 38,538.06
  4. Step 4: Simplify right side
    65,386.86x = 3,478,182,080.65
  5. Step 5: Solve for x
    x = 3,478,182,080.65/65,386.86
  6. Step 6: Final answer
    x = 53,193.90

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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.