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Finding the Fourth Proportional to 64,281.60, 88,709.76 and 35,987.20

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Solution

The fourth proportional to 64,281.60, 88,709.76 and 35,987.20 is: 49,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,281.60 : 88,709.76 = 35,987.20 : x
  2. Step 2: Convert to fraction form
    64,281.60/88,709.76 = 35,987.20/x
  3. Step 3: Cross multiply
    64,281.60x = 88,709.76 × 35,987.20
  4. Step 4: Simplify right side
    64,281.60x = 3,192,415,875.07
  5. Step 5: Solve for x
    x = 3,192,415,875.07/64,281.60
  6. Step 6: Final answer
    x = 49,662.98

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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.