Home / 112,575.69-155,353.28-61,587.90

Finding the Fourth Proportional to 112,575.69, 155,353.28 and 61,587.90

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Solution

The fourth proportional to 112,575.69, 155,353.28 and 61,587.90 is: 84,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,575.69 : 155,353.28 = 61,587.90 : x
  2. Step 2: Convert to fraction form
    112,575.69/155,353.28 = 61,587.90/x
  3. Step 3: Cross multiply
    112,575.69x = 155,353.28 × 61,587.90
  4. Step 4: Simplify right side
    112,575.69x = 9,567,881,965.37
  5. Step 5: Solve for x
    x = 9,567,881,965.37/112,575.69
  6. Step 6: Final answer
    x = 84,990.66

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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.