Home / 31,920,020.40-47,880,030.60-19,154,938.80

Finding the Fourth Proportional to 31,920,020.40, 47,880,030.60 and 19,154,938.80

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Solution

The fourth proportional to 31,920,020.40, 47,880,030.60 and 19,154,938.80 is: 28,732,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920,020.40 : 47,880,030.60 = 19,154,938.80 : x
  2. Step 2: Convert to fraction form
    31,920,020.40/47,880,030.60 = 19,154,938.80/x
  3. Step 3: Cross multiply
    31,920,020.40x = 47,880,030.60 × 19,154,938.80
  4. Step 4: Simplify right side
    31,920,020.40x = 917,139,055,885,127.38
  5. Step 5: Solve for x
    x = 917,139,055,885,127.38/31,920,020.40
  6. Step 6: Final answer
    x = 28,732,408.20

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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.