Home / 56,563.79-78,089.20-38,685.06

Finding the Fourth Proportional to 56,563.79, 78,089.20 and 38,685.06

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Solution

The fourth proportional to 56,563.79, 78,089.20 and 38,685.06 is: 53,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,563.79 : 78,089.20 = 38,685.06 : x
  2. Step 2: Convert to fraction form
    56,563.79/78,089.20 = 38,685.06/x
  3. Step 3: Cross multiply
    56,563.79x = 78,089.20 × 38,685.06
  4. Step 4: Simplify right side
    56,563.79x = 3,020,885,290.64
  5. Step 5: Solve for x
    x = 3,020,885,290.64/56,563.79
  6. Step 6: Final answer
    x = 53,406.70

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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.