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Finding the Fourth Proportional to 56,579.40, 84,869.10 and 14,459.40

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Solution

The fourth proportional to 56,579.40, 84,869.10 and 14,459.40 is: 21,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,579.40 : 84,869.10 = 14,459.40 : x
  2. Step 2: Convert to fraction form
    56,579.40/84,869.10 = 14,459.40/x
  3. Step 3: Cross multiply
    56,579.40x = 84,869.10 × 14,459.40
  4. Step 4: Simplify right side
    56,579.40x = 1,227,156,264.54
  5. Step 5: Solve for x
    x = 1,227,156,264.54/56,579.40
  6. Step 6: Final answer
    x = 21,689.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.