Home / 72,666,421.40-109,020,671.18-21,549,670.40

Finding the Fourth Proportional to 72,666,421.40, 109,020,671.18 and 21,549,670.40

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Solution

The fourth proportional to 72,666,421.40, 109,020,671.18 and 21,549,670.40 is: 32,330,744.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,666,421.40 : 109,020,671.18 = 21,549,670.40 : x
  2. Step 2: Convert to fraction form
    72,666,421.40/109,020,671.18 = 21,549,670.40/x
  3. Step 3: Cross multiply
    72,666,421.40x = 109,020,671.18 × 21,549,670.40
  4. Step 4: Simplify right side
    72,666,421.40x = 2,349,359,530,715,779
  5. Step 5: Solve for x
    x = 2,349,359,530,715,779/72,666,421.40
  6. Step 6: Final answer
    x = 32,330,744.87

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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.