Home / 86,037.05-128,909.95-52,687.46

Finding the Fourth Proportional to 86,037.05, 128,909.95 and 52,687.46

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Solution

The fourth proportional to 86,037.05, 128,909.95 and 52,687.46 is: 78,942.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,037.05 : 128,909.95 = 52,687.46 : x
  2. Step 2: Convert to fraction form
    86,037.05/128,909.95 = 52,687.46/x
  3. Step 3: Cross multiply
    86,037.05x = 128,909.95 × 52,687.46
  4. Step 4: Simplify right side
    86,037.05x = 6,791,938,024.78
  5. Step 5: Solve for x
    x = 6,791,938,024.78/86,037.05
  6. Step 6: Final answer
    x = 78,942.01

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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.