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Finding the Fourth Proportional to 65,345,875.20, 98,018,812.80 and 65,345,875.20

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Solution

The fourth proportional to 65,345,875.20, 98,018,812.80 and 65,345,875.20 is: 98,018,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,345,875.20 : 98,018,812.80 = 65,345,875.20 : x
  2. Step 2: Convert to fraction form
    65,345,875.20/98,018,812.80 = 65,345,875.20/x
  3. Step 3: Cross multiply
    65,345,875.20x = 98,018,812.80 × 65,345,875.20
  4. Step 4: Simplify right side
    65,345,875.20x = 6,405,125,108,480,963
  5. Step 5: Solve for x
    x = 6,405,125,108,480,963/65,345,875.20
  6. Step 6: Final answer
    x = 98,018,812.80

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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.