Home / 42,776,020.40-64,164,030.60-12,486,945.20

Finding the Fourth Proportional to 42,776,020.40, 64,164,030.60 and 12,486,945.20

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Solution

The fourth proportional to 42,776,020.40, 64,164,030.60 and 12,486,945.20 is: 18,730,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,776,020.40 : 64,164,030.60 = 12,486,945.20 : x
  2. Step 2: Convert to fraction form
    42,776,020.40/64,164,030.60 = 12,486,945.20/x
  3. Step 3: Cross multiply
    42,776,020.40x = 64,164,030.60 × 12,486,945.20
  4. Step 4: Simplify right side
    42,776,020.40x = 801,212,733,913,323.12
  5. Step 5: Solve for x
    x = 801,212,733,913,323.12/42,776,020.40
  6. Step 6: Final answer
    x = 18,730,417.80

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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.