Home / 64,216.08-88,642.80-42,987.60

Finding the Fourth Proportional to 64,216.08, 88,642.80 and 42,987.60

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Solution

The fourth proportional to 64,216.08, 88,642.80 and 42,987.60 is: 59,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,216.08 : 88,642.80 = 42,987.60 : x
  2. Step 2: Convert to fraction form
    64,216.08/88,642.80 = 42,987.60/x
  3. Step 3: Cross multiply
    64,216.08x = 88,642.80 × 42,987.60
  4. Step 4: Simplify right side
    64,216.08x = 3,810,541,229.28
  5. Step 5: Solve for x
    x = 3,810,541,229.28/64,216.08
  6. Step 6: Final answer
    x = 59,339.36

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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.