Home / 72,971,208.32-100,700,275.28-39,931,464.65

Finding the Fourth Proportional to 72,971,208.32, 100,700,275.28 and 39,931,464.65

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Solution

The fourth proportional to 72,971,208.32, 100,700,275.28 and 39,931,464.65 is: 55,105,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971,208.32 : 100,700,275.28 = 39,931,464.65 : x
  2. Step 2: Convert to fraction form
    72,971,208.32/100,700,275.28 = 39,931,464.65/x
  3. Step 3: Cross multiply
    72,971,208.32x = 100,700,275.28 × 39,931,464.65
  4. Step 4: Simplify right side
    72,971,208.32x = 4,021,109,481,885,430.50
  5. Step 5: Solve for x
    x = 4,021,109,481,885,430.50/72,971,208.32
  6. Step 6: Final answer
    x = 55,105,425.48

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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.