Home / 84,012,034.20-126,018,051.30-30,152,347.80

Finding the Fourth Proportional to 84,012,034.20, 126,018,051.30 and 30,152,347.80

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Solution

The fourth proportional to 84,012,034.20, 126,018,051.30 and 30,152,347.80 is: 45,228,521.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,012,034.20 : 126,018,051.30 = 30,152,347.80 : x
  2. Step 2: Convert to fraction form
    84,012,034.20/126,018,051.30 = 30,152,347.80/x
  3. Step 3: Cross multiply
    84,012,034.20x = 126,018,051.30 × 30,152,347.80
  4. Step 4: Simplify right side
    84,012,034.20x = 3,799,740,111,875,842
  5. Step 5: Solve for x
    x = 3,799,740,111,875,842/84,012,034.20
  6. Step 6: Final answer
    x = 45,228,521.70

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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.