Home / 91,038.13-136,557.20-28,713.49

Finding the Fourth Proportional to 91,038.13, 136,557.20 and 28,713.49

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Solution

The fourth proportional to 91,038.13, 136,557.20 and 28,713.49 is: 43,070.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,038.13 : 136,557.20 = 28,713.49 : x
  2. Step 2: Convert to fraction form
    91,038.13/136,557.20 = 28,713.49/x
  3. Step 3: Cross multiply
    91,038.13x = 136,557.20 × 28,713.49
  4. Step 4: Simplify right side
    91,038.13x = 3,921,033,653.06
  5. Step 5: Solve for x
    x = 3,921,033,653.06/91,038.13
  6. Step 6: Final answer
    x = 43,070.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.