Home / 56,913.60-78,530.40-48,943.20

Finding the Fourth Proportional to 56,913.60, 78,530.40 and 48,943.20

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Solution

The fourth proportional to 56,913.60, 78,530.40 and 48,943.20 is: 67,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.60 : 78,530.40 = 48,943.20 : x
  2. Step 2: Convert to fraction form
    56,913.60/78,530.40 = 48,943.20/x
  3. Step 3: Cross multiply
    56,913.60x = 78,530.40 × 48,943.20
  4. Step 4: Simplify right side
    56,913.60x = 3,843,529,073.28
  5. Step 5: Solve for x
    x = 3,843,529,073.28/56,913.60
  6. Step 6: Final answer
    x = 67,532.70

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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.