Home / 78,488.72-108,312.14-44,500.34

Finding the Fourth Proportional to 78,488.72, 108,312.14 and 44,500.34

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Solution

The fourth proportional to 78,488.72, 108,312.14 and 44,500.34 is: 61,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,488.72 : 108,312.14 = 44,500.34 : x
  2. Step 2: Convert to fraction form
    78,488.72/108,312.14 = 44,500.34/x
  3. Step 3: Cross multiply
    78,488.72x = 108,312.14 × 44,500.34
  4. Step 4: Simplify right side
    78,488.72x = 4,819,926,292.07
  5. Step 5: Solve for x
    x = 4,819,926,292.07/78,488.72
  6. Step 6: Final answer
    x = 61,409.16

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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.