Home / 100,038.29-138,037.52-57,588.62

Finding the Fourth Proportional to 100,038.29, 138,037.52 and 57,588.62

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Solution

The fourth proportional to 100,038.29, 138,037.52 and 57,588.62 is: 79,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,038.29 : 138,037.52 = 57,588.62 : x
  2. Step 2: Convert to fraction form
    100,038.29/138,037.52 = 57,588.62/x
  3. Step 3: Cross multiply
    100,038.29x = 138,037.52 × 57,588.62
  4. Step 4: Simplify right side
    100,038.29x = 7,949,389,997.08
  5. Step 5: Solve for x
    x = 7,949,389,997.08/100,038.29
  6. Step 6: Final answer
    x = 79,463.47

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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.