Home / 78,881,091.40-118,321,637.10-53,400,694.60

Finding the Fourth Proportional to 78,881,091.40, 118,321,637.10 and 53,400,694.60

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Solution

The fourth proportional to 78,881,091.40, 118,321,637.10 and 53,400,694.60 is: 80,101,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881,091.40 : 118,321,637.10 = 53,400,694.60 : x
  2. Step 2: Convert to fraction form
    78,881,091.40/118,321,637.10 = 53,400,694.60/x
  3. Step 3: Cross multiply
    78,881,091.40x = 118,321,637.10 × 53,400,694.60
  4. Step 4: Simplify right side
    78,881,091.40x = 6,318,457,607,349,130
  5. Step 5: Solve for x
    x = 6,318,457,607,349,130/78,881,091.40
  6. Step 6: Final answer
    x = 80,101,041.90

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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.