Home / 31,019,444.30-42,778,966.38-19,418,065.40

Finding the Fourth Proportional to 31,019,444.30, 42,778,966.38 and 19,418,065.40

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Solution

The fourth proportional to 31,019,444.30, 42,778,966.38 and 19,418,065.40 is: 26,779,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,019,444.30 : 42,778,966.38 = 19,418,065.40 : x
  2. Step 2: Convert to fraction form
    31,019,444.30/42,778,966.38 = 19,418,065.40/x
  3. Step 3: Cross multiply
    31,019,444.30x = 42,778,966.38 × 19,418,065.40
  4. Step 4: Simplify right side
    31,019,444.30x = 830,684,766,911,241.25
  5. Step 5: Solve for x
    x = 830,684,766,911,241.25/31,019,444.30
  6. Step 6: Final answer
    x = 26,779,485.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.