Home / 56,871.65-78,494.85-38,990.18

Finding the Fourth Proportional to 56,871.65, 78,494.85 and 38,990.18

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Solution

The fourth proportional to 56,871.65, 78,494.85 and 38,990.18 is: 53,814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.65 : 78,494.85 = 38,990.18 : x
  2. Step 2: Convert to fraction form
    56,871.65/78,494.85 = 38,990.18/x
  3. Step 3: Cross multiply
    56,871.65x = 78,494.85 × 38,990.18
  4. Step 4: Simplify right side
    56,871.65x = 3,060,528,526.81
  5. Step 5: Solve for x
    x = 3,060,528,526.81/56,871.65
  6. Step 6: Final answer
    x = 53,814.66

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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.