Home / 78,740.23-118,110.77-19,575.90

Finding the Fourth Proportional to 78,740.23, 118,110.77 and 19,575.90

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Solution

The fourth proportional to 78,740.23, 118,110.77 and 19,575.90 is: 29,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.23 : 118,110.77 = 19,575.90 : x
  2. Step 2: Convert to fraction form
    78,740.23/118,110.77 = 19,575.90/x
  3. Step 3: Cross multiply
    78,740.23x = 118,110.77 × 19,575.90
  4. Step 4: Simplify right side
    78,740.23x = 2,312,124,031.89
  5. Step 5: Solve for x
    x = 2,312,124,031.89/78,740.23
  6. Step 6: Final answer
    x = 29,363.95

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1.5x scale

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.