Home / 86,929.81-119,920.80-56,701.42

Finding the Fourth Proportional to 86,929.81, 119,920.80 and 56,701.42

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Solution

The fourth proportional to 86,929.81, 119,920.80 and 56,701.42 is: 78,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.81 : 119,920.80 = 56,701.42 : x
  2. Step 2: Convert to fraction form
    86,929.81/119,920.80 = 56,701.42/x
  3. Step 3: Cross multiply
    86,929.81x = 119,920.80 × 56,701.42
  4. Step 4: Simplify right side
    86,929.81x = 6,799,679,560.36
  5. Step 5: Solve for x
    x = 6,799,679,560.36/86,929.81
  6. Step 6: Final answer
    x = 78,220.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.