Home / 31,380,123.40-47,070,185.10-11,178,075.40

Finding the Fourth Proportional to 31,380,123.40, 47,070,185.10 and 11,178,075.40

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Solution

The fourth proportional to 31,380,123.40, 47,070,185.10 and 11,178,075.40 is: 16,767,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380,123.40 : 47,070,185.10 = 11,178,075.40 : x
  2. Step 2: Convert to fraction form
    31,380,123.40/47,070,185.10 = 11,178,075.40/x
  3. Step 3: Cross multiply
    31,380,123.40x = 47,070,185.10 × 11,178,075.40
  4. Step 4: Simplify right side
    31,380,123.40x = 526,154,078,139,756.56
  5. Step 5: Solve for x
    x = 526,154,078,139,756.56/31,380,123.40
  6. Step 6: Final answer
    x = 16,767,113.10

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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.