Home / 72,146.61-99,564.53-40,316.85

Finding the Fourth Proportional to 72,146.61, 99,564.53 and 40,316.85

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Solution

The fourth proportional to 72,146.61, 99,564.53 and 40,316.85 is: 55,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,146.61 : 99,564.53 = 40,316.85 : x
  2. Step 2: Convert to fraction form
    72,146.61/99,564.53 = 40,316.85/x
  3. Step 3: Cross multiply
    72,146.61x = 99,564.53 × 40,316.85
  4. Step 4: Simplify right side
    72,146.61x = 4,014,128,019.75
  5. Step 5: Solve for x
    x = 4,014,128,019.75/72,146.61
  6. Step 6: Final answer
    x = 55,638.48

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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.