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Finding the Fourth Proportional to 104,008.55, 143,531.12 and 56,260.87

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Solution

The fourth proportional to 104,008.55, 143,531.12 and 56,260.87 is: 77,639.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,008.55 : 143,531.12 = 56,260.87 : x
  2. Step 2: Convert to fraction form
    104,008.55/143,531.12 = 56,260.87/x
  3. Step 3: Cross multiply
    104,008.55x = 143,531.12 × 56,260.87
  4. Step 4: Simplify right side
    104,008.55x = 8,075,185,465.10
  5. Step 5: Solve for x
    x = 8,075,185,465.10/104,008.55
  6. Step 6: Final answer
    x = 77,639.63

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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.