Home / 42,140.40-58,177.08-28,731.36

Finding the Fourth Proportional to 42,140.40, 58,177.08 and 28,731.36

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Solution

The fourth proportional to 42,140.40, 58,177.08 and 28,731.36 is: 39,665.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.40 : 58,177.08 = 28,731.36 : x
  2. Step 2: Convert to fraction form
    42,140.40/58,177.08 = 28,731.36/x
  3. Step 3: Cross multiply
    42,140.40x = 58,177.08 × 28,731.36
  4. Step 4: Simplify right side
    42,140.40x = 1,671,506,629.23
  5. Step 5: Solve for x
    x = 1,671,506,629.23/42,140.40
  6. Step 6: Final answer
    x = 39,665.18

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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.