Home / 31,054,138-42,854,880.36-18,009,131.28

Finding the Fourth Proportional to 31,054,138, 42,854,880.36 and 18,009,131.28

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Solution

The fourth proportional to 31,054,138, 42,854,880.36 and 18,009,131.28 is: 24,852,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,054,138 : 42,854,880.36 = 18,009,131.28 : x
  2. Step 2: Convert to fraction form
    31,054,138/42,854,880.36 = 18,009,131.28/x
  3. Step 3: Cross multiply
    31,054,138x = 42,854,880.36 × 18,009,131.28
  4. Step 4: Simplify right side
    31,054,138x = 771,779,166,391,933.75
  5. Step 5: Solve for x
    x = 771,779,166,391,933.75/31,054,138
  6. Step 6: Final answer
    x = 24,852,699.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.