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Finding the Fourth Proportional to 78,391,496.40, 117,579,641.40 and 23,804,554.32

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Solution

The fourth proportional to 78,391,496.40, 117,579,641.40 and 23,804,554.32 is: 35,704,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,391,496.40 : 117,579,641.40 = 23,804,554.32 : x
  2. Step 2: Convert to fraction form
    78,391,496.40/117,579,641.40 = 23,804,554.32/x
  3. Step 3: Cross multiply
    78,391,496.40x = 117,579,641.40 × 23,804,554.32
  4. Step 4: Simplify right side
    78,391,496.40x = 2,798,930,960,632,421
  5. Step 5: Solve for x
    x = 2,798,930,960,632,421/78,391,496.40
  6. Step 6: Final answer
    x = 35,704,522.67

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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.