Home / 72,821,987.32-100,495,823.93-39,784,376.29

Finding the Fourth Proportional to 72,821,987.32, 100,495,823.93 and 39,784,376.29

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Solution

The fourth proportional to 72,821,987.32, 100,495,823.93 and 39,784,376.29 is: 54,903,248.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821,987.32 : 100,495,823.93 = 39,784,376.29 : x
  2. Step 2: Convert to fraction form
    72,821,987.32/100,495,823.93 = 39,784,376.29/x
  3. Step 3: Cross multiply
    72,821,987.32x = 100,495,823.93 × 39,784,376.29
  4. Step 4: Simplify right side
    72,821,987.32x = 3,998,163,675,055,946
  5. Step 5: Solve for x
    x = 3,998,163,675,055,946/72,821,987.32
  6. Step 6: Final answer
    x = 54,903,248.62

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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.