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Finding the Fourth Proportional to 91,892,192.90, 137,838,289.35 and 57,879,968.90

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Solution

The fourth proportional to 91,892,192.90, 137,838,289.35 and 57,879,968.90 is: 86,819,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,892,192.90 : 137,838,289.35 = 57,879,968.90 : x
  2. Step 2: Convert to fraction form
    91,892,192.90/137,838,289.35 = 57,879,968.90/x
  3. Step 3: Cross multiply
    91,892,192.90x = 137,838,289.35 × 57,879,968.90
  4. Step 4: Simplify right side
    91,892,192.90x = 7,978,075,900,807,201
  5. Step 5: Solve for x
    x = 7,978,075,900,807,201/91,892,192.90
  6. Step 6: Final answer
    x = 86,819,953.35

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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.