Home / 81,492,328.90-122,196,502.95-30,348,021.70

Finding the Fourth Proportional to 81,492,328.90, 122,196,502.95 and 30,348,021.70

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Solution

The fourth proportional to 81,492,328.90, 122,196,502.95 and 30,348,021.70 is: 45,506,395.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492,328.90 : 122,196,502.95 = 30,348,021.70 : x
  2. Step 2: Convert to fraction form
    81,492,328.90/122,196,502.95 = 30,348,021.70/x
  3. Step 3: Cross multiply
    81,492,328.90x = 122,196,502.95 × 30,348,021.70
  4. Step 4: Simplify right side
    81,492,328.90x = 3,708,422,123,190,714
  5. Step 5: Solve for x
    x = 3,708,422,123,190,714/81,492,328.90
  6. Step 6: Final answer
    x = 45,506,395.18

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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.