Home / 28,071,808.40-42,107,712.60-7,877,050.40

Finding the Fourth Proportional to 28,071,808.40, 42,107,712.60 and 7,877,050.40

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Solution

The fourth proportional to 28,071,808.40, 42,107,712.60 and 7,877,050.40 is: 11,815,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071,808.40 : 42,107,712.60 = 7,877,050.40 : x
  2. Step 2: Convert to fraction form
    28,071,808.40/42,107,712.60 = 7,877,050.40/x
  3. Step 3: Cross multiply
    28,071,808.40x = 42,107,712.60 × 7,877,050.40
  4. Step 4: Simplify right side
    28,071,808.40x = 331,684,574,378,915.06
  5. Step 5: Solve for x
    x = 331,684,574,378,915.06/28,071,808.40
  6. Step 6: Final answer
    x = 11,815,575.60

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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.