Home / 47,275.47-65,247.09-31,140.19

Finding the Fourth Proportional to 47,275.47, 65,247.09 and 31,140.19

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Solution

The fourth proportional to 47,275.47, 65,247.09 and 31,140.19 is: 42,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,275.47 : 65,247.09 = 31,140.19 : x
  2. Step 2: Convert to fraction form
    47,275.47/65,247.09 = 31,140.19/x
  3. Step 3: Cross multiply
    47,275.47x = 65,247.09 × 31,140.19
  4. Step 4: Simplify right side
    47,275.47x = 2,031,806,938.91
  5. Step 5: Solve for x
    x = 2,031,806,938.91/47,275.47
  6. Step 6: Final answer
    x = 42,978.04

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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.