Home / 78,226,622.60-117,312,828.75-39,350,048.60

Finding the Fourth Proportional to 78,226,622.60, 117,312,828.75 and 39,350,048.60

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Solution

The fourth proportional to 78,226,622.60, 117,312,828.75 and 39,350,048.60 is: 59,011,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226,622.60 : 117,312,828.75 = 39,350,048.60 : x
  2. Step 2: Convert to fraction form
    78,226,622.60/117,312,828.75 = 39,350,048.60/x
  3. Step 3: Cross multiply
    78,226,622.60x = 117,312,828.75 × 39,350,048.60
  4. Step 4: Simplify right side
    78,226,622.60x = 4,616,265,513,009,259
  5. Step 5: Solve for x
    x = 4,616,265,513,009,259/78,226,622.60
  6. Step 6: Final answer
    x = 59,011,438.30

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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.