Home / 72,154.55-99,562.12-40,317.29

Finding the Fourth Proportional to 72,154.55, 99,562.12 and 40,317.29

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Solution

The fourth proportional to 72,154.55, 99,562.12 and 40,317.29 is: 55,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.55 : 99,562.12 = 40,317.29 : x
  2. Step 2: Convert to fraction form
    72,154.55/99,562.12 = 40,317.29/x
  3. Step 3: Cross multiply
    72,154.55x = 99,562.12 × 40,317.29
  4. Step 4: Simplify right side
    72,154.55x = 4,014,075,013.17
  5. Step 5: Solve for x
    x = 4,014,075,013.17/72,154.55
  6. Step 6: Final answer
    x = 55,631.63

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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.