Home / 56,616.16-78,128.40-31,465.12

Finding the Fourth Proportional to 56,616.16, 78,128.40 and 31,465.12

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Solution

The fourth proportional to 56,616.16, 78,128.40 and 31,465.12 is: 43,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,616.16 : 78,128.40 = 31,465.12 : x
  2. Step 2: Convert to fraction form
    56,616.16/78,128.40 = 31,465.12/x
  3. Step 3: Cross multiply
    56,616.16x = 78,128.40 × 31,465.12
  4. Step 4: Simplify right side
    56,616.16x = 2,458,319,481.41
  5. Step 5: Solve for x
    x = 2,458,319,481.41/56,616.16
  6. Step 6: Final answer
    x = 43,420.81

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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.