Home / 90,560.16-135,854.64-31,413.60

Finding the Fourth Proportional to 90,560.16, 135,854.64 and 31,413.60

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Solution

The fourth proportional to 90,560.16, 135,854.64 and 31,413.60 is: 47,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,560.16 : 135,854.64 = 31,413.60 : x
  2. Step 2: Convert to fraction form
    90,560.16/135,854.64 = 31,413.60/x
  3. Step 3: Cross multiply
    90,560.16x = 135,854.64 × 31,413.60
  4. Step 4: Simplify right side
    90,560.16x = 4,267,683,319.10
  5. Step 5: Solve for x
    x = 4,267,683,319.10/90,560.16
  6. Step 6: Final answer
    x = 47,125.40

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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.