Home / 31,506,180.40-47,164,792.20-18,720,103.60

Finding the Fourth Proportional to 31,506,180.40, 47,164,792.20 and 18,720,103.60

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Solution

The fourth proportional to 31,506,180.40, 47,164,792.20 and 18,720,103.60 is: 28,024,018.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,506,180.40 : 47,164,792.20 = 18,720,103.60 : x
  2. Step 2: Convert to fraction form
    31,506,180.40/47,164,792.20 = 18,720,103.60/x
  3. Step 3: Cross multiply
    31,506,180.40x = 47,164,792.20 × 18,720,103.60
  4. Step 4: Simplify right side
    31,506,180.40x = 882,929,796,256,472
  5. Step 5: Solve for x
    x = 882,929,796,256,472/31,506,180.40
  6. Step 6: Final answer
    x = 28,024,018.94

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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.