Home / 42,785,988.40-64,178,982.60-40,695,799.60

Finding the Fourth Proportional to 42,785,988.40, 64,178,982.60 and 40,695,799.60

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Solution

The fourth proportional to 42,785,988.40, 64,178,982.60 and 40,695,799.60 is: 61,043,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,785,988.40 : 64,178,982.60 = 40,695,799.60 : x
  2. Step 2: Convert to fraction form
    42,785,988.40/64,178,982.60 = 40,695,799.60/x
  3. Step 3: Cross multiply
    42,785,988.40x = 64,178,982.60 × 40,695,799.60
  4. Step 4: Simplify right side
    42,785,988.40x = 2,611,815,014,421,487
  5. Step 5: Solve for x
    x = 2,611,815,014,421,487/42,785,988.40
  6. Step 6: Final answer
    x = 61,043,699.40

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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.