Home / 42,011,220.80-63,018,801.48-20,420,085.44

Finding the Fourth Proportional to 42,011,220.80, 63,018,801.48 and 20,420,085.44

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Solution

The fourth proportional to 42,011,220.80, 63,018,801.48 and 20,420,085.44 is: 30,631,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,011,220.80 : 63,018,801.48 = 20,420,085.44 : x
  2. Step 2: Convert to fraction form
    42,011,220.80/63,018,801.48 = 20,420,085.44/x
  3. Step 3: Cross multiply
    42,011,220.80x = 63,018,801.48 × 20,420,085.44
  4. Step 4: Simplify right side
    42,011,220.80x = 1,286,849,310,547,998.50
  5. Step 5: Solve for x
    x = 1,286,849,310,547,998.50/42,011,220.80
  6. Step 6: Final answer
    x = 30,631,085.84

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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.