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Finding the Fourth Proportional to 55,869.30, 78,320.70 and 55,869.30

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Solution

The fourth proportional to 55,869.30, 78,320.70 and 55,869.30 is: 78,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,869.30 : 78,320.70 = 55,869.30 : x
  2. Step 2: Convert to fraction form
    55,869.30/78,320.70 = 55,869.30/x
  3. Step 3: Cross multiply
    55,869.30x = 78,320.70 × 55,869.30
  4. Step 4: Simplify right side
    55,869.30x = 4,375,722,684.51
  5. Step 5: Solve for x
    x = 4,375,722,684.51/55,869.30
  6. Step 6: Final answer
    x = 78,320.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.