Home / 72,174,885.60-108,262,328.40-21,062,071.20

Finding the Fourth Proportional to 72,174,885.60, 108,262,328.40 and 21,062,071.20

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Solution

The fourth proportional to 72,174,885.60, 108,262,328.40 and 21,062,071.20 is: 31,593,106.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174,885.60 : 108,262,328.40 = 21,062,071.20 : x
  2. Step 2: Convert to fraction form
    72,174,885.60/108,262,328.40 = 21,062,071.20/x
  3. Step 3: Cross multiply
    72,174,885.60x = 108,262,328.40 × 21,062,071.20
  4. Step 4: Simplify right side
    72,174,885.60x = 2,280,228,869,038,582
  5. Step 5: Solve for x
    x = 2,280,228,869,038,582/72,174,885.60
  6. Step 6: Final answer
    x = 31,593,106.80

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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.