Home / 86,439.06-129,657.24-52,714.98

Finding the Fourth Proportional to 86,439.06, 129,657.24 and 52,714.98

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Solution

The fourth proportional to 86,439.06, 129,657.24 and 52,714.98 is: 79,071.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,439.06 : 129,657.24 = 52,714.98 : x
  2. Step 2: Convert to fraction form
    86,439.06/129,657.24 = 52,714.98/x
  3. Step 3: Cross multiply
    86,439.06x = 129,657.24 × 52,714.98
  4. Step 4: Simplify right side
    86,439.06x = 6,834,878,813.46
  5. Step 5: Solve for x
    x = 6,834,878,813.46/86,439.06
  6. Step 6: Final answer
    x = 79,071.65

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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.