Home / 77,001.10-115,501.65-52,117.90

Finding the Fourth Proportional to 77,001.10, 115,501.65 and 52,117.90

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Solution

The fourth proportional to 77,001.10, 115,501.65 and 52,117.90 is: 78,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,001.10 : 115,501.65 = 52,117.90 : x
  2. Step 2: Convert to fraction form
    77,001.10/115,501.65 = 52,117.90/x
  3. Step 3: Cross multiply
    77,001.10x = 115,501.65 × 52,117.90
  4. Step 4: Simplify right side
    77,001.10x = 6,019,703,444.54
  5. Step 5: Solve for x
    x = 6,019,703,444.54/77,001.10
  6. Step 6: Final answer
    x = 78,176.85

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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.