Home / 85,211,455.20-127,817,182.80-71,606,565.60

Finding the Fourth Proportional to 85,211,455.20, 127,817,182.80 and 71,606,565.60

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Solution

The fourth proportional to 85,211,455.20, 127,817,182.80 and 71,606,565.60 is: 107,409,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,455.20 : 127,817,182.80 = 71,606,565.60 : x
  2. Step 2: Convert to fraction form
    85,211,455.20/127,817,182.80 = 71,606,565.60/x
  3. Step 3: Cross multiply
    85,211,455.20x = 127,817,182.80 × 71,606,565.60
  4. Step 4: Simplify right side
    85,211,455.20x = 9,152,549,484,975,390
  5. Step 5: Solve for x
    x = 9,152,549,484,975,390/85,211,455.20
  6. Step 6: Final answer
    x = 107,409,848.40

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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.