Home / 86,688.12-129,925.82-49,279.48

Finding the Fourth Proportional to 86,688.12, 129,925.82 and 49,279.48

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Solution

The fourth proportional to 86,688.12, 129,925.82 and 49,279.48 is: 73,858.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,688.12 : 129,925.82 = 49,279.48 : x
  2. Step 2: Convert to fraction form
    86,688.12/129,925.82 = 49,279.48/x
  3. Step 3: Cross multiply
    86,688.12x = 129,925.82 × 49,279.48
  4. Step 4: Simplify right side
    86,688.12x = 6,402,676,848.17
  5. Step 5: Solve for x
    x = 6,402,676,848.17/86,688.12
  6. Step 6: Final answer
    x = 73,858.76

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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.