Home / 86,918.16-119,948.76-56,722.80

Finding the Fourth Proportional to 86,918.16, 119,948.76 and 56,722.80

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Solution

The fourth proportional to 86,918.16, 119,948.76 and 56,722.80 is: 78,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,918.16 : 119,948.76 = 56,722.80 : x
  2. Step 2: Convert to fraction form
    86,918.16/119,948.76 = 56,722.80/x
  3. Step 3: Cross multiply
    86,918.16x = 119,948.76 × 56,722.80
  4. Step 4: Simplify right side
    86,918.16x = 6,803,829,523.73
  5. Step 5: Solve for x
    x = 6,803,829,523.73/86,918.16
  6. Step 6: Final answer
    x = 78,278.57

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1.5x scale

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.